The present invention provides a production method of a ferrite material comprising as main constituents Fe.sub.2O.sub.3: 62 to 68 mol %, ZnO: 12 to 20 mol %, and MnO substantially constituting the balance, wherein the method comprises a compacting step for obtaining a compacted body by using a powder containing the main constituents, the powder having a specific surface area falling within a range between 2.5 and 5.0 m.sup.2/g and a 90% particle size of 10 .mu.m or less, and a sintering step for sintering the compacted body obtained in the compacting step. Accordingly, the saturation magnetic flux density of the Mn--Zn based ferrite can be improved.